Wrench



B. G. B.ERRIEN. Jr.

WRBNGH.

N0. 419,816. PatentedJan. 21, 1890.

(N0 Model.)

teeth 01 projecoions ab the rear portion, and

UNITED STATES PATENT OFFICE.

BENJAMIN G. BERRIEN, JR.

O13 YONKERS, NEW YORK.

WRENCH.

SPECIFIGATION forming part of Letters Patent N0. 419,816, dated January 21, 1890.

Application filed November 13, 1888- T0 all w7wm z't may conczarn:

Be it known that I, BENJAMIN G. BERRIEN, J r., of Yonkers,in the eounty of \Vestehester and State 0f New York, have invented a certain new and useful Improvement in \Vrenches 0f which the following is a specification.

My improvement partieularly relates t0 wrenehes fo1 usewith pipes 01 other ronnd articles.

The improvement eonsists in the combination, in a wreneh, of a fixed j aw, a movable 01 adjustable jaw provided With a numbe-r 0f a lever fulcrumed 130 the main frame er handle of the wreneh and adapced o0 engage With one 01 othe1 of said teet-h 01 proj eetions 011 the movable jaw and hold it rigidly as adjusted.

In the accompanying drawings, Figure 1 is a partly=sectional side view of a wrench embodying 1ny improvement. Fig. 2 is a sind- 1a1 view 0f the jaw portion, showing the movable jaw in a differenn posii0n. Fig. 3 is a t0p view.

Similar letters of reference designate corresponding parts in all the figures.

A designates the main frame 0f the wrench. In comprises a handle portion a and a fixed jaw a, whieh may advantageously be serrated, as shown.

B designates a movalole jaW. lt is shown as inserted in a bifurcated 0r slotted portion of the frame A and secured therein by a crosspin b, so as t0 be capable of swinging. I have shown ehe face of this movable jaw as serrated. The opposite faces 0f the jaws may be of any desired shape. I have shown the outer portion of the face 0f the movable jaw as rounded. The heel 01 1ear portion 0f 1;he movable jaw is eoncentrie 150 the pivotpin, and' is shown a s provided With a nn1nber 0f teeth or projeetions b.

O designates a leve1 fulcrumed bet-ween ehe ende o0 tl1e main frame and extending ab the forward end int0 such a position that it may engag'e With 011e of the teeth 01 projections Zu 011 the moVable jaw, and extending a Serial N0. 290,686. (N0 model.)

the other end into proximity with the handle Portion 0f the fra1ne A.

The n1ovable j aw may be independently adj usted into position, so that ib, With the fixed jaw, 1nay grip pipes 01 other ronnd artieles 0f different sizes. The lever C may, after any adj usmnent 0f the n1evable jaw, engage With one of the teeth 01 projeetions b 011 the heel 0f the movable jaw, and if uhe lever be then grasped witl1 the band whieh holds the handle portion of the frame of the wreneh the movable jaw may be seeurely and rigidly held in position. If the foree applied so the lever be relaxed, the movable j aw may be swung backward. It Will be observed tha1: the lever O does 11011 operace to adjust the jaw B. The lever may be oseillaed fa1 enongh 130 be entirely disengaged fr0n1the movable jaw, so as to leave the latter free to be swung in either direction int0 a new position. After adjustment tl1e lever Will be re-engaged With the movable jaw.

T0 adapt the wrench f01 work in all positions, lt may be desirable to combine wih the movable jaw a spring D. I have shown this spring as forked, so as to straddle the lever C, and as being seeured ab the forked portion t0 tl1e bifureated portion 0f he Wrench-frame in whioh the movable jaw is seeured. The spring bears npon the back of the movable jaw, pressing it toward the fixed jaw. A spring E is shown as arranged between the lever and he handle. This may be nsed 130 swing the lever in a direction fi0 automatically disengage lt fron1 the movable jaw.

Whao I elaim as 1ny invention, and desire to seeure by Letters Patent, is-

l. A wrench having, in combination, afixed j aw, an adjustable jaw provided on the heel Q1 rear pori0n With teeth o r projeetions, and a lever Which may be swung into o1 ont 0f engagemen With said 1novable jaw, substantially as and f01 tlie purpose speeified.

2. A wrenchhaving,in combinauion, a fixed jaw, an independently-adjustable jaw provided 011 the heel 01' rear portion With teeth 01 projections, a springfor pressing the m0vable jaw toward 1;11e fixed jaw, anal a lever which maybe swung into 01 ou1: of engagas adjusted, and a spring serving to oscillate ment with the said movable jaw and holding said lever in such direction as to disengage -IO the Same rigidly, substantially as speeified. iu from ohe movable jaw, substantially as and 3. A wrench ha-ving, in combination, a fixed f0r the purpose specified.

jaw, a movable jaw provided 011 the hee1 o1 BENJAMIN G. BERRIEN, JR. rear portion with teeth or projections, a1ever Vitnesses: which may be swung int0 01 01113 of engage- O. S. BURNHAM,

ment with said movable ja w, holding the jaw JOHN O. STILWELL. 

